A team of researchers created a nontoxic nanocapsule made from amino acids that stores and transports alpha emitters from radioisotopes and helps contain the potentially harmful daughter ions they produce. "While other vesicles have been created from lipids, most are much less stable and break down. Ours are like stones, though," said researcher John M. Tomich. Researchers tested the approach with the radioisotope 225-actinium, which releases alpha particles and daughter ions, finding that the structures contained the alpha particles and daughter ions. Details of the study appear in the journal Biochimica et Biophysica Acta.

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